KNOX Krypton ECO-4000 3kW-24VDC max pV4000 watt battery less operation Genuine Voltronic Power Taiwan

🔧 What is it

• The Knox Krypton Eco 4000 is a 3 kW hybrid solar inverter (model: 3kW-24-pV4000). 

• It’s part of the “Krypton” series of inverters from Knox — designed for residential or small-business solar setups. 

• It converts solar (DC) energy — from PV panels — (and optionally battery energy) into AC electricity (230 VAC), for powering home or office loads. 

⚙️ Key Technical Specifications

• Rated Output Power: 4000 VA / 4000 W 

• Battery Mode Output: 2500 W

• PV + Battery Output (when both used): 3000 W 

• Surge Capacity: 6000 VA (useful for starting heavy appliances)
  

  
  

• Efficiency (Peak): ~ 93%

• Waveform: Pure sine wave — ensures safe and stable power for sensitive devices (computers, TVs, etc.)

  PV (Solar Panel) Support:

• • Maximum PV array power: 4000 W
    

    
    

  • Maximum PV open-circuit voltage: up to 450 VDC 

  • MPPT charge controller built in — improves solar energy extraction efficiency. 

• Battery: 24 V DC system (though “batteryless” operation is possible) 

• Operating Range: Accepts mains input voltage (230 VAC ± tolerance), frequency 50/60 Hz auto-sensing. 

• Transfer time (when switching power source): ~ 10 ms (for computers) or ~ 20 ms (for home appliances) — fast enough that many devices won’t notice an interruption.

• Physical: Dimensions ~ 95 × 288 × 357 mm, weight ~ 7.1 kg.

📡 WiFi & Connectivity — What “WiFi” means for this Inverter

• The “WiFi” in its name/description refers to optional built-in WiFi or communication interface, enabling remote monitoring/control of the inverter. Besides WiFi, the unit provides RS232 / RS485 communication ports — useful if you want to connect a Battery Management System (BMS) or a computer for monitoring.  

• With WiFi + communication features + built-in MPPT + “grid-feed” support, you can monitor solar generation, load consumption, possibly configure settings, and (if supported by local grid policy) feed surplus solar energy back to the grid (“net-metering / grid-tie”). 

• The inverter also supports battery-independent (batteryless) operation — meaning you don’t need to install a battery to use solar + grid power. That can reduce upfront cost and maintenance. 

✅ What It’s Good For / Use Cases

• Homes or small businesses in Pakistan (or similar regions) that want to install solar — especially where grid supply is unstable or there are frequent outages.

• Those who want a hybrid inverter that works with solar + grid + optional battery — flexible and scalable.

• People wanting remote monitoring / control of their solar system (via WiFi) — helpful if you manage solar from a distance.

• Users who want clean and stable AC power (pure sine wave) for sensitive electronics.

• Those who may not want to invest in batteries immediately — can start with solar + grid, and add battery later if needed.